Customer pain: Nozzle degradation from harsh chemicals.
Requirement: Corrosion-resistant materials (316SS, PVDF).
Surface Treatment Spray Nozzles
High-performance nozzles for metal surface pretreatment, phosphating, degreasing, pickling, and electroplating line cleaning. Durable, corrosion-resistant designs for harsh chemical environments.
Common Surface Treatment Challenges & Solutions
Chemical Corrosion from Acids and Alkalis
Precision Cleaning of Blind Holes and Grooves
Customer pain: Incomplete cleaning of complex geometries.
Requirement: High-pressure needle nozzles, accurate targeting.
Fire Safety in High-Pressure Systems
Customer pain: Fire risk in paint and coating areas.
Requirement: Water mist fire suppression integration.
Steel · Automotive
Metal Surface Pretreatment
Cleaning and preparation of metal surfaces prior to coating, painting, or other finishing processes. Removal of oils, oxides, and contaminants ensures proper adhesion of subsequent coatings.
Associated Industries: Steel · Automotive
Treatment Challenges:
- Removing oils, oxides, and mill scale from metal surfaces
- Achieving uniform cleaning across varying part geometries
- Preventing recontamination between treatment stages
Recommended Products:
MEG-275 High Pressure (75) – 275 bar, 0°–65°, alloy steel
CC Flat Fan Nozzle (60) – 0.3–35 bar, 15°–110°
W Wide Angle Flat Fan (64) – 70°–140°, 0.2–4 bar
💡 Engineering Tip: For heavy mill scale removal, use MEG-275 (75) at 200-250 bar. For chemical pretreatment stages, use CC Flat Fan (60) with 316SS for corrosion resistance. Maintain proper nozzle spacing for complete coverage.
Automotive · Industrial
Phosphating
Application of phosphate conversion coatings for corrosion protection and paint adhesion. Phosphating creates a crystalline layer that improves paint bonding and provides temporary corrosion resistance.
Associated Industries: Automotive
Treatment Challenges:
- Maintaining consistent bath chemistry and temperature
- Achieving uniform crystal formation across the part surface
- Preventing sludge formation and nozzle clogging
Recommended Products:
CC Flat Fan Nozzle (60) – 0.3–35 bar, 15°–110°
HU Industrial Flat Fan (65) – 0.3–35 bar, 0°–110°
V Narrow Angle Flat Fan (133) – high impact, brass/316SS
💡 Engineering Tip: For phosphating lines, use CC Flat Fan (60) with 60°–80° spray angle. Select 316SS for corrosion resistance. Ensure even overlap to achieve uniform coating thickness of 2-5g/m².
Electronics · Automotive
Electroplating Line Cleaning
Cleaning and rinsing of parts between electroplating baths for quality and contamination control. Proper rinsing prevents bath contamination and ensures plating adhesion.
Associated Industries: Automotive · Electronics
Treatment Challenges:
- Avoiding chemical carryover between plating baths
- Preventing water spots and staining on plated surfaces
- Handling high-volume continuous production lines
Recommended Products:
W Wide Angle Flat Fan (64) – 70°–140°, 0.2–4 bar
CTC Low Pressure Flat Fan (134) – 25°–90°, 303/316SS
CY38170 Ceramic Solid Stream (136) – 138 bar, ceramic core
💡 Engineering Tip: For electroplating rinsing, use CTC (134) with DI water for final rinse. Use CY38170 (136) for high-pressure cleaning of parts before plating. Cascading rinse systems with proper nozzle placement reduce water consumption.
Industrial · Automotive
Degreasing
Removal of oils and greases from metal parts using alkaline or solvent-based cleaners. Effective degreasing is the critical first step in surface treatment processes.
Associated Industries: Automotive · Industrial
Treatment Challenges:
- Removing heavy oils and greases from complex part surfaces
- Handling high-temperature alkaline cleaners
- Preventing oil redeposition on cleaned surfaces
Recommended Products:
CC Flat Fan Nozzle (60) – 0.3–35 bar, 15°–110°
HU Industrial Flat Fan (65) – 0.3–35 bar, 0°–110°
MEG-275 High Pressure (75) – 275 bar, 0°–65°
💡 Engineering Tip: For alkaline degreasing, use CC Flat Fan (60) at 3-10 bar with 60° spray angle. For heavy oil removal, use MEG-275 (75) at high pressure. Maintain bath temperature at 60-80°C for optimal cleaning.
Steel · Metallurgy
Pickling & Rinsing
Acid cleaning of steel to remove scale, rust, and oxides, followed by thorough rinsing. Pickling prepares steel surfaces for further processing like cold rolling or coating.
Associated Industries: Steel & Metallurgy
Treatment Challenges:
- Handling corrosive hydrochloric or sulfuric acids
- Complete removal of acid residues during rinsing
- Acid fume containment and worker safety
Recommended Products:
W Wide Angle Flat Fan (64) – 70°–140°, 0.2–4 bar
CCTC-2510 Disc Flat Fan (67) – 25°, stainless steel
CTC-6513 Low Pressure (68) – SS316, low pressure
💡 Engineering Tip: For pickling, use W Wide Angle (64) with 316SS or PVDF for acid resistance. For rinse stages, use CTC (68) with 316SS. Install fume extraction and use acid-resistant materials for all wetted parts.
Automotive
Automotive Pre-Paint Treatment
Complete pretreatment line for automotive bodies including degreasing, phosphating, and rinsing before paint application. The multi-stage process ensures maximum paint adhesion and corrosion resistance.
Associated Industries: Automotive Manufacturing
Treatment Challenges:
- Uniform treatment of complex body shell geometries
- Maintaining high line speeds with consistent quality
- Reducing chemical and water consumption
Recommended Products:
CC Flat Fan Nozzle (60) – 0.3–35 bar, 15°–110°
CTC Low Pressure Flat Fan (134) – 25°–90°, 303/316SS
XSWT1.0/10 Water Mist (140) – fire protection, 68°
💡 Engineering Tip: Automotive pretreatment lines use a multi-stage system: degreasing (alkaline) → rinsing → phosphating → rinsing. Use CC (60) for chemical stages and CTC (134) for final rinse to minimize contamination. Optimize nozzle spacing for complete coverage of body shells.
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Frequently Asked Questions
What pressure is needed for degreasing?
For alkaline degreasing, 3–10 bar is typical. For stubborn oil, use high‑pressure nozzles like MEG‑275 up to 275 bar.
How do I choose nozzles for a phosphating line?
Use flat fan nozzles with 60°–80° spray angle. Select 316SS for corrosion resistance. Ensure even overlap to achieve uniform coating thickness.
Can I use the same nozzle for rinsing and pickling?
Yes, but pickling uses strong acids that require corrosion‑resistant materials. Rinsing can use cheaper materials like PVC or brass.
What is the typical nozzle spacing for conveyor washers?
Spacing depends on spray angle and distance. Typically 150–300 mm between nozzles to ensure overlapping spray patterns for full coverage.
How to handle waste water from surface treatment?
Proper nozzle selection minimizes overspray and waste. Use high‑efficiency nozzles to reduce chemical carryover. Consult local environmental regulations for treatment.
What material is best for phosphoric acid environments?
316L stainless steel is standard. For high-temperature phosphating baths, consider PVDF or ceramic-coated nozzles for extended life.
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